Tā chī yī qiàn zhīhòu, zàiyě bù qīngyì xiāngxìn mòshēngrén le.
After his setback, he no longer trusted strangers easily.
Tips
usage
吃一堑 is the first half of the proverb 吃一堑，长一智 - literally 'fall into one moat, gain one wisdom'. 堑 means moat or pit. Often used alone to mean 'learn from a mistake'.
